gov.noaa.class:CORS eng; USA utf8 series Francine Coloma DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce 303 497-3692 303 497-6513 325 Broadway Boulder CO 80305 USA Francine.Coloma@noaa.gov 9:00 - 5:00 Mountain pointOfContact 2013-08-06 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) 2 column 0.00001 row 0.00001 point false CORS Coordinates 2011-07-20 revision National Geodetic Survey - CORS http://www.ngs.noaa.gov/CORS/coords.shtml CORS Coordinates Identification and descriptions of coordinate systems for CORS. information publisher NAD83 CORS Coordinates 2011-07-20 revision National Geodetic Survey - CORS http://www.ngs.noaa.gov/CORS/coords.shtml CORS Coordinates Identification and descriptions of coordinate systems for CORS. information publisher ITRF00 NOAA CLASS archive: Continuously Operating Reference Stations (CORS) 2010-10 publication DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce http://www.ngs.noaa.gov/CORS/ National Geodectic Survey - Continuously Operating Reference Stations (CORS) Home page for CORS main facility in Silver Spring, MD information originator DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce http://alt.ngs.noaa.gov/CORS/ National Geodetic Survey - Continuously Operating Reference Stations (CORS) Home page for CORS alternate facility in Boulder, CO information resourceProvider DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce originator DOC/NOAA/CLASS > Comprehensive Large Array-data Stewardship System, NOAA, U.S. Department of Commerce Boulder CO publisher NOAA CLASS archive: Continuously Operating Reference Stations (CORS) - The National Geodetic Survey (NGS), an office of NOAA's National Ocean Service (NOS), coordinates a network of geodetic-quality CORS stations that provide Global Positioning System (GPS) carrier phase and code range measurements in support of 3-dimensional positioning activities throughout the United States and its territories. The positions of these CORS sites help define the National Spatial Reference System (NSRS). NGS defines and manages the NSRS - the framework for latitude, longitude, height, scale, gravity, orientation and shoreline throughout the U.S. The NSRS provides a consistent national coordinate system to support mapping, charting, navigation, boundary determination, property delineation, infrastructure development, resource evaluation surveys, and scientific applications. The CORS system enables positional accuracies that approach a few centimeters relative to the NSRS, both horizontally and vertically.<br/><br/> While every effort is made to retain data in the original at-sampling rate, there may be cases where only the 30-second decimated rate data exists. Data availability (note latency from present day) for RINEX data is archive start date on 1994:112 and current date at 32-days before present; for raw GPS data (selected sites) is archive start date on 2004:193 and current date at 5 days before present. NGDC archives the CORS data set as per the NOAA/NOS Records Disposition Schedule, section 1602-12. NGS coordinates a network of CORS stations from over 200 organizations such as federal, state, and local governments, academia, the private sector, and international groups. underDevelopment daily EARTH SCIENCE > Solid Earth > Geodetics/Gravity > Reference Systems EARTH SCIENCE > Solid Earth > Geodetics/Gravity > Control Surveys EARTH SCIENCE > Solid Earth > Geodetics/Gravity > Crustal Motion EARTH SCIENCE > Solid Earth > Tectonics > Plate Tectonics EARTH SCIENCE > Sun-earth Interactions > Solar Energetic Particle Properties > Total Electron Content theme NASA/GCMD Earth Science Keywords NAVSTAR > NAVSTAR Global Positioning System GPS > Global Positioning System Satellites GROUND-BASED OBSERVATIONS GROUND STATIONS GNSS > Global Navigation Satellite Systems GLONASS > Global'naya Navigatsionnaya Sputnikovaya Sistema theme GCMD Platform Keywords Geographic Region > Global place NASA/GCMD Location Keywords Crust Troposphere Ionosphere stratum None otherRestrictions otherRestrictions Access Constraints: None; Use Constraints: None; Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. eng; USA geoscientificInformation location -180 180 -90 90 2010-10 2011-08-09T19:13:39.705-06:00 The United States operates the Global Positioning System (GPS). The term Global Navigation Satellite Systems (GNSS) has been created to reference all navigation satellite systems. GNSS encompasses the U.S. GPS system, the Russian Federation GLONASS system, and any future systems such as Europe's Galileo or China's Compass. ASCII 2.11 Receiver Independent Exchange Format (RINEX) GNU zip compression (gzip) DOC/NOAA/CLASS > Comprehensive Large Array-data Stewardship System, NOAA, U.S. Department of Commerce (828) 271-4850 x3183 (828) 271-4328 CLASS, 151 Patton Avenue Asheville NC 28801-5001 USA info@class.noaa.gov 9:00 - 5:00 EST Phone/E-mail/letter. CLASS provides data free of charge. Anyone can search the CLASS catalog and view search results through CLASS's World Wide Web (WWW) site. Users who wish to order data are required to register with their names and email addresses. CLASS distributes data to those users via FTP services. distributor None 2010-10-01T00:00:00 Download from CLASS http://www.class.noaa.gov/ CLASS Homepage Order options for NGS Continuously Operating Reference Stations (CORS) datasets archived and distributed at CLASS. order series Horizontal Positional Accuracy The horizontal coordinates of the GPS site, specifically the GPS antenna location, are accurate to about a centimeter once biases are removed. Vertical Positional Accuracy The vertical coordinates of the GPS site, specifically the GPS antenna location, are accurate to about 2 centimeters. meters Data written to the CLASS archive is reviewed for completeness. Automated routines perform daily checks for file names and file sizes, and also aided by the internal checksum of GNU zip compression as data is written to tape. Any faulty data is removed from the archive. To become part of the CORS network, each site must pass through NGS' site criteria standards and maintain its integrity. Automated routines at NGDC pull data staged by NGS at regular intervals. The carrier phase observations are accurate to a few centimeters, once biases have been removed. GNSS observational data from sites are ingested by NGS and are posted to the NGS online servers as daily files in RINEX format (ASCII). The NGDC archive has automated daily routines that selectively pull in the daily observational files at the original sampling rate, the daily observational summary file, the daily broadcast ephemeris files, and any corresponding meteorological files. Each site has a metadata record retained as a site log file (ASCII). 2010-10-01T00:00:00 User Services DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce 301-713-3191 301-713-4324 Spatial Reference System Division 1315 East-West Highway N/NGS2, SSMC3, Room 8813 Silver Spring MD 20910 U.S.A. ngs.cors@noaa.gov processor Source Contribution: GNSS data in RINEX format (ASCII) and station metadata (ASCII) digital files via FTP NOAA CLASS archive: Continuously Operating Reference Stations (CORS) GNSS 2010-10 publication DOC/NOAA/NOS/NGS > National Geodetic Survey, National Ocean Service, NOAA, U.S. Department of Commerce resourceProvider DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (comp.) resourceProvider ground condition 2010-11 2011-08-09T19:13:39.705-06:00 series U.S. Air Force Space Command (AFSC) formally declared the GPS satellite constellation consisting of 24 GPS satellites (Block I and Block II/IIA) as having met the requirement for Initial Operational Capability (IOC). 1993-12-08T00:00:00 The first operational CORS station is NGS-owned station GAIT in Gaithersburg, MD. 1994-04-22T00:00:00 The U.S. Air Force Space Command (AFSC) formally declared the GPS satellite constellation as having met the requirement for Full Operational Capability (FOC) as of April 27, 1995. Requirements include 24 operational satellites (Block II/IIA) functioning in their assigned orbits and successful testing completed for operational military functionality. 1995-04-27T00:00:00 annually Francine Coloma DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce 303 497-3692 303 497-6513 325 Broadway Boulder CO 80305 USA Francine.Coloma@noaa.gov 9:00 - 5:00 Mountain custodian Global Navigation Satellite Systems (GNSS) is a generic term used to describe the space-based constellations that provide carrier phase, code range, and clock information in support of 3-dimensional positioning activities. This term encompasses existing satellite navigation systems such as the Global Positioning System (GPS) of the United States and the GLObal'naya NAvigatsionnaya Sputnikovaya Sistema (GLONASS) of Russia and also upcoming systems such as the Galileo system of the European Union (EU) and the European Space Agency (ESA), and the COMPASS/Beidou system of China. GNSS > Global Navigation Satellite System onGoing GPS > Global Positioning System The U.S. Air Force of the Department of Defense developed, maintains, and operates the space and control segments of the GPS constellation. Full Operational Capability was declared by NAVSTAR in April 1995. United States Air Force owner GPS Receiver Positioning/Navigation GLONASS > Global'naya Navigatsionnaya Sputnikovaya Sistema The Global'naya Navigatsionnaya Sputnikovaya Sistema (GLONASS) is a Soviet space-based navigation system comparable to the American GPS system. The operational system contains 21 satellites in 3 orbital planes, with 3 on-orbit spares. Glonass provides 100 meters accuracy with its C/A (deliberately degraded) signals and 10-20 meter accuracy with its P (military) signals. http://www.glonass-ianc.rsa.ru/pls/htmldb/f?p=202:1:6462407165002138::NO Russian Federation owner GNSS receiver Positioning/Navigation